| 1. |
- Alcorn, J, et al.
(författare)
-
Basic instrumentation for Hall A at Jefferson Lab
- 2004
-
Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - : Elsevier BV. - 0167-5087 .- 0168-9002. ; 522:3, s. 294-346
-
Tidskriftsartikel (refereegranskat)abstract
- The instrumentation in Hall A at the Thomas Jefferson National Accelerator Facility was designed to study electro-and photo-induced reactions at very high luminosity and good momentum and angular resolution for at least one of the reaction products. The central components of Hall A are two identical high resolution spectrometers, which allow the vertical drift chambers in the focal plane to provide a momentum resolution of better than 2 x 10(-4). A variety of Cherenkov counters, scintillators and lead-glass calorimeters provide excellent particle identification. The facility has been operated successfully at a luminosity well in excess of 10(38) CM-2 s(-1). The research program is aimed at a variety of subjects, including nucleon structure functions, nucleon form factors and properties of the nuclear medium. (C) 2003 Elsevier B.V. All rights reserved.
|
|
| 2. |
|
|
| 3. |
- Popat, S, et al.
(författare)
-
Variation in the CTLA4/CD28 gene region confers an increased risk of coeliac disease.
- 2002
-
Ingår i: Annals of human genetics. - 0003-4800 .- 1469-1809. ; 66:Pt 2, s. 125-37
-
Tidskriftsartikel (refereegranskat)abstract
- Susceptibility to coeliac disease involves HLA and non-HLA-linked genes. The CTLA4/CD28 gene region encodes immune regulatory T-cell surface molecules and is a strong candidate as a susceptibility locus. We evaluated CTLA4/CD28 in coeliac disease by genetic linkage and association and combined our findings with published studies through a meta-analysis. 116 multiplex families were genotyped across CTLA4/CD28 using eight markers. The contribution of CTLA4/CD28 to coeliac disease was assessed by non-parametric linkage and association analyses. Seven studies were identified that had evaluated the relationship between CTLA4/CD28 and coeliac disease and a pooled analysis of data undertaken. In our study there was evidence for a relationship between variation in the CTLA4/CD28 region and coeliac disease by linkage and association analyses. However, the findings did not attain formal statistical significance (p = 0.004 and 0.039, respectively). Pooling findings with published results showed significant evidence for linkage (504 families) and association (940 families): p values, 0.0001 and 0.0014 at D2S2214, respectively, and 0.0008 and 0.0006 at D2S116, respectively. These findings suggest that variation in the CD28/CTLA4 gene region is a determinant of coeliac disease susceptibility. Dissecting the sequence variation underlying this relationship will depend on further analyses utilising denser sets of markers.
|
|
| 4. |
|
|
| 5. |
- Holmes, Emily A., et al.
(författare)
-
Trauma films, information processing, and intrusive memory development
- 2004
-
Ingår i: Journal of experimental psychology. General. - : AMER PSYCHOLOGICAL ASSOC. - 0096-3445 .- 1939-2222. ; 133:1, s. 3-22
-
Tidskriftsartikel (refereegranskat)abstract
- Three experiments indexed the effect of various concurrent tasks, while watching a traumatic film, on intrusive memory development. Hypotheses were based on the dual-representation theory of Posttraumatic stress disorder (C. R. Brewin, T. Dalgleish, & S. Joseph, 1996). Nonclinical participants viewed a trauma film under various encoding conditions and recorded any spontaneous intrusive memories of the film over the following week in a diary. Changes in state dissociation, heart rate, and mood were also measured. As predicted, performing a visuospatial pattern tapping task at encoding significantly reduced the frequency of later intrusions, whereas a verbal distraction task increased them. Intrusive memories were largely unrelated to recall and recognition measures. Increases in dissociation and decreases in heart rate during the film were also associated with later intrusions.
|
|
| 6. |
- Popat, S, et al.
(författare)
-
Genome screening of coeliac disease
- 2002
-
Ingår i: Journal of Medical Genetics. - : BMJ. - 0022-2593 .- 1468-6244. ; 39:5, s. 328-331
-
Tidskriftsartikel (refereegranskat)
|
|
| 7. |
- Ziegler, K., et al.
(författare)
-
The synthesis of matrices of embedded semiconducting nanowires
- 2004
-
Ingår i: Faraday discussions. - : Royal Society of Chemistry (RSC). - 1359-6640 .- 1364-5498. ; 125, s. 311-326
-
Tidskriftsartikel (refereegranskat)abstract
- In this work we report how single crystal nanowires can be assembled into regular arrays using mesoporous thin films to define the architecture. Mesoporous thin films were prepared by a sol-gel method. These provide films of very regular structure and dimensions. The films produced in this way have almost single crystal like structures and can also exhibit strong epitaxy to the underlying silicon substrate. The films are subjected to a supercritical fluid (SCF) environment in which a precursor is decomposed to yield nanowires of metals, semiconductors or oxides. Using these SCF conditions, pore filling is complete and the products are nanowires which are single crystals and structurally aligned in one direction. The growth mechanism of the nanowires is described and size effects discussed.
|
|
| 8. |
- Brewin, C R, et al.
(författare)
-
Psychological theories of posttraumatic stress disorder
- 2003
-
Ingår i: Clinical Psychology Review. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0272-7358 .- 1873-7811. ; 23:3, s. 339-376
-
Forskningsöversikt (refereegranskat)abstract
- We summarize recent research on the psychological processes implicated in posttraumatic stress disorder (PTSD) as an aid to evaluating theoretical models of the disorder. After describing a number of early approaches, including social-cognitive, conditioning, information-processing, and anxious apprehension models of PTSD, the article provides a comparative analysis and evaluation of three recent theories: Foa and Rothbaum's [Foa, E. B. & Rothbaum, B. O. (1998). Treating the trauma of rape: cognitive behavioral therapy for PTSD. New York: Guilford Press] emotional processing theory; Brewin, Dalgleish, and Joseph's [Psychological Review 103 (1996) 670] dual representation theory; Ehlers and Clark's [Behaviour Research and Therapy 38 (2000) 319] cognitive theory. We review empirical evidence relevant to each model and identify promising areas for further research. (C) 2003 Elsevier Science Ltd. All rights reserved.
|
|
| 9. |
|
|
| 10. |
- Grey, Nick, et al.
(författare)
-
PERITRAUMATIC EMOTIONAL "HOT SPOTS'' IN MEMORY
- 2001
-
Ingår i: Behavioural and Cognitive Psychotherapy. - : CAMBRIDGE UNIV PRESS. - 1352-4658 .- 1469-1833. ; 29:3, s. 367-372
-
Tidskriftsartikel (refereegranskat)abstract
- Individuals with posttraumatic stress disorder (PTSD) frequently report periods of intense emotional distress ("hot spots'') when asked to describe their traumatic experience in detail. "Primary'' emotions felt during the trauma (i.e., peri-traumatically) are believed to consist mainly of fear, helplessness and horror. We report a preliminary investigation into the emotions associated with these hot spots. Patients with PTSD described a wide variety of emotions such as anger, humiliation and guilt present at the time of the trauma. The peri-traumatic cognitions associated with these emotions are also detailed.
|
|
